//
//  UIColor+HexStringColor.m
//  FunctionModule
//
//  Created by mac03 on 2021/6/9.
//

#import "UIColor+HexStringColor.h"

@implementation UIColor (HexStringColor)
+(UIColor *)colorWithHexString:(NSString *)color
{
    NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
    
    // String should be 6 or 8 characters
    if ([cString length] < 6) {
        return [UIColor clearColor];
    }
    
    // strip 0X if it appears
    if ([cString hasPrefix:@"0X"])
        cString = [cString substringFromIndex:2];
    if ([cString hasPrefix:@"#"])
        cString = [cString substringFromIndex:1];
    if ([cString length] != 6)
        return [UIColor clearColor];
    
    // Separate into r, g, b substrings
    NSRange range;
    range.location = 0;
    range.length = 2;
    
    //r
    NSString *rString = [cString substringWithRange:range];
    
    //g
    range.location = 2;
    NSString *gString = [cString substringWithRange:range];
    
    //b
    range.location = 4;
    NSString *bString = [cString substringWithRange:range];
    
    // Scan values
    unsigned int r, g, b;
    [[NSScanner scannerWithString:rString] scanHexInt:&r];
    [[NSScanner scannerWithString:gString] scanHexInt:&g];
    [[NSScanner scannerWithString:bString] scanHexInt:&b];
    
    return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f) alpha:1.0f];
}
+(UIColor *)colorWithHexString:(NSString *)color alpha:(CGFloat)alpha
{
    NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
    
    // String should be 6 or 8 characters
    if ([cString length] < 6) {
        return [UIColor clearColor];
    }
    
    // strip 0X if it appears
    if ([cString hasPrefix:@"0X"])
        cString = [cString substringFromIndex:2];
    if ([cString hasPrefix:@"#"])
        cString = [cString substringFromIndex:1];
    if ([cString length] != 6)
        return [UIColor clearColor];
    
    // Separate into r, g, b substrings
    NSRange range;
    range.location = 0;
    range.length = 2;
    
    //r
    NSString *rString = [cString substringWithRange:range];
    
    //g
    range.location = 2;
    NSString *gString = [cString substringWithRange:range];
    
    //b
    range.location = 4;
    NSString *bString = [cString substringWithRange:range];
    
    // Scan values
    unsigned int r, g, b;
    [[NSScanner scannerWithString:rString] scanHexInt:&r];
    [[NSScanner scannerWithString:gString] scanHexInt:&g];
    [[NSScanner scannerWithString:bString] scanHexInt:&b];
    
    return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f) alpha:alpha];
}

+(UIColor *)colorWithHexString:(NSString *)whiteC blackHexString:(NSString *)blackC{
    UIColor *whiteColor = [self colorWithHexString:whiteC];
    UIColor *blackColor = [self colorWithHexString:blackC];
    if (@available(iOS 13.0, *)) {
        UIColor *color =  [UIColor colorWithDynamicProvider:^UIColor * _Nonnull(UITraitCollection * _Nonnull traitCollection) {
               if (traitCollection.userInterfaceStyle == UIUserInterfaceStyleDark) {
                   return blackColor;
               }
               return whiteColor;
           }];
           return color;
       }
    return whiteColor;
}

/// 颜色暗夜模式带透明度
+(UIColor *)colorWithHexString:(NSString *)whiteC blackHexString:(NSString *)blackC alpha:(CGFloat)alpha{
    UIColor *whiteColor = [self colorWithHexString:whiteC alpha:alpha];
    UIColor *blackColor = [self colorWithHexString:blackC alpha:alpha];
    if (@available(iOS 13.0, *)) {
        UIColor *color =  [UIColor colorWithDynamicProvider:^UIColor * _Nonnull(UITraitCollection * _Nonnull traitCollection) {
               if (traitCollection.userInterfaceStyle == UIUserInterfaceStyleDark) {
                   return blackColor;
               }
               return whiteColor;
           }];
           return color;
       }
    return whiteColor;
}
@end
